Cross-line mounting for telescopes.



P. J. GLBARY.

CROSS LINE MOUNTING FOR TELESOOPES.

APPLIGATION FILED 0GT.14, 1914.

Patented Feb. 16, 1915.

2 SHEETS-SHEET 1.

i WM a t WW THE NORRIS PETERS C0. PHOTO-LITHQ. WASHINGI'ON. n c

F. J. GLEARY. GROSS LINE MOUNTING FOR TELESGOPES.

APPLIOATION FILED 00114, 191 1.

Patented Feb. 16, 1915.

2 SHEETS-SHEET 2.

WEE. a-

THE NORRIS PETERS CO1. PHOTO-LII HO.. WASHING I'ON. D. c.

CROSS-LINE MOUNTING FOR TELESCOPE-S.

To all whom it may concern:

Be it known that I, FRANoIs J. CLEARY, a lieutenant, United States Navy, a citizen of the United States, at present stationed at Mare Island, Vallejo, California, have invented certain new and useful Improvements in Cross-Line Mountings for Telescopes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to bore sighting telescopes and has for its object to so imall the views :-Figure 1 is a side elevation I prove the construction of the telescope disclosed in my copending application No. 792132, filed September 27, 1913, entitled bore sighting telescopes that the removal for cleaning and the accurate replacing of the cross line diaphragm and its coacting parts can be accomplished more expeditiously.

With these and other objects in view the invention consists in the novel details of construction and combinations of parts more fully hereinafter disclosed and particularlypointed out in the claims.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate'like parts in partly in section of a telescope provided with my improvements; Fig. 2 is a sectional view showing the cross line diaphragm and its coacting parts on an enlarged scale, and partially dis-assembled; Fig. 8 is a view similar to Fig. 1 showing a slightly modified form of my invention; Fig. t is a view. of a wrench for adjusting the cross line diaphragm, Fig- 5 is a sectional view of slightly modified constructionsemployed 1n the cross line mounting illustrated in Fig. 3; Fig. 6 is a sectional view showing the parts of'Fig. 5 partially dis-assembled; Fig. 7 is an elevational view of a convenient form of wrench. for assembling and dis-assembling the parts shown in Figs. 2 and 5; and Fig. Sis a view of a thumb key for engaging the screw heads 17 Prior to my invention of. the telescope disclosed in my said application above, it was customary to place the cross line diaphragm in the center of the ball joint 1, and, in order to insure that the cross line intersection was accurately placed in the line of collimation of the telescope during Specification of Letters Patent. Patented Feb, 16, 1915, Application filed 0'ctober 14, 1914. Serial No. 866,681.

manufacture, after cleaning, and during. re-

pairs, it was necessary to make the cross line diaphragm adjustable in a plane perpendicular to theaXisof collimation. It being further necessary or very desirable at times to remove the cross linediaphragm. for cleaning at sea, and there being no facilities aboard ship for accurately centering it after it was replaced, serious inconveniences arose." These and other objections vwere largely done away with in the invention made the subject of my said application above, but it hasnow been found desirable to provide still further improvements made the subject ,of this application, and which will now be disclosed. v I v 2 indicates a housing having an enlarged rear end 3, through which, passes the tele scope adjusting screws, 4, taking against the floating ring 5 as in my application above. The floating ring in my preferred construc tion illustrated in Fig. 1 is preferably provided with a tapered bore 6,.which fits a cone shaped surface 7 with which a ring 8 rigidly fitting the telescope tube 9 is provided. Further, the cross lines are preferably carried by the transparent member or diaphragm 10 mounted in the tubular member 11, provided with the cone shaped surface 12 fitting the interior of a tapered surface 13 carried by the second tubularmember 14 having the screw threads 40 and the enlarged periphery 15, provided with four screw threaded apertures apartto accommodate the adjusting screws 16 having theheads 17 adapted to --be engaged by the I thumb keys 18. The housing 3 is provided with apertures 19 controlled by the closing ring 20, adapted: to admit the ends of the thumb keys 18 and to thereupon enable the screws 16 to be adjusted for the purpose ofmeans 28 as will be readily understood. I

The knurled ring 30 as in my application above, is preferably secured to the telescope tube 9 by any suitable means such as 31, and when it is desired. to remove the transparent member 10 carrying the cross lines,

for the purpose of cleaning, it is only necessary to slack up on, or unscrew the means 31, turn and remove the ring 30, which carries with it the eyepiece and the associated erecting system, including the lens 41. The erecting system and the eyepiece having been removed in one with the ring 30, the wrench 42, Fig. 7 may now be readily inserted into said barrel, and its pins 43 made to engage the holes 43 in the locking ring 45, causing the screw threads 46 of said ring to disengage the screw threads40 of said tubular member 14, all as will be clear from Figs. 1 and 2. The locking ring 45, being thus removed, the wrench 42 may now be reversed and its screw threaded end 46 engaged with the screw threads 4'? with which the first tubular member 11 is provided. A straight pull on the wrench 42 will now remove the member 11, and diaphragm 10, whereupon the parts may be readily cleaned.

-When the parts are to be reassembled, care should be exercised in causing the slot 48 with which the member 11 is provided, to engage the pin 49 carried by the member 14, whereupon the parts may be shoved home, with the assurance that aided by the coned bearing surfaces of parts 11 and 14 they have been accurately replaced in their former positions.

In the modified form of my invention shown in Figs. 3, 5 and 6, the rigid ring member 8 is omitted, the member 50 is shaped somewhat different from the member 14, the cross line mount 51, is provided with a slot 52 adapted to engage a pin 57 carried by the member 50, similar to the slot 48: and the pin 49: in Fig. 2. The tubular member 53 is threaded on the outside and screws into the tube 9 to hold the member 50 up against the member 54, said member 50: being slidably adjustable between members 53 and 54 by means of the four adjusting screws 60. The tubular member 53 is provided with holes 55 which may be conveniently engaged by a tool if it is desired to remove the members 53 and 50. The adjusting screw heads are also difierent from the screw heads 17, and a wrench such as 61 is provided for operating the same.

\Vhen it is desired to clean the modified form of cross line mounting shown in Figs.

- piece 3, 5 and 6, one removes the eyepiece and the erecting system by slacking up on the screw 65, Fig. 3, and turning the ring 30 as in my application above, when the eyeand the erecting system including the lens 41 readily comes out of the telescope tube 9. The pins 43 of the wrench 42 are then engaged with the holes 43' in the ring 45, the latter removed and the screw threads 46 made to engage the screw threads 47 in the member- 51, when said member 51 is likewise removed m the same manner as was the member 11 above disclosed. Likewise in reassembling the parts the slot 52 is made to engage the pin 57 when the ring 45 may be screwed home with the assurance that the cross line intersection has been correctly and accurately replaced.

It is obvious that those skilled in the art may vary the details of construction as well as the arrangement of parts without departing from the spirit of my invention, and therefore I do not wish to be limited to the above'disclosure except as may be required by the claims.

What I claim is 1. In a bore sighting telescope the combination of a cross line diaphragm support provided with a tapered surface; a transversely adjustable mounting for said support provided with a complementary ta pered surface adapted to fit said first named surface; a locking ring provided with means to facilitate removing of the same, for holding said surfaces together; means carried by said support to facilitate its ready removal from said mounting when the parts are disassembled; and means associated with said support and mounting to insure the accurate replacement of the cross line intersection when the parts are reassembled, substantially as described.

2. In a bore sighting telescope the combination of means for securing the same in the bore of a gun; an objective; an eye piece; a cross line diaphragm support provided with a cone shaped outer and a screw threaded inner surface located between said eye piece and objective; an adjustable mounting provided with'a cone shaped inner surface adapted to receive said first named surface, and with a screw threaded outer surface; and a locking ring provided with means to facilitate its removal fitting said last named outer screw threaded surface, substantially as described.

3. In a bore sighting telescope the combination of means for securing the same in the bore of a gun; an objective; an eye piece; a cross line diaphragm support pro vided with a cone shaped outer and a screw threaded inner surface located between said eye piece and objective and provided with a slot; an adjustable mounting provided with a pin adapted to fit said slot; a cone shaped inner surface adapted to receive said first named surface, and with a screw threaded outer surface; and a locking ring provided with means to. facilitate its removal fitting said last named outer screw threaded surface, substantially as described.

4. In a bore sighting telescope the combination of means for securing the same in the bore of a gun; an objective; an eye piece; a cross line diaphragm support provided with a cone shaped outer and a screw threaded inner surface located between said eye piece and objective; a floating ring surrounding the barrel of said telescope .to enable the same to be rotated on its longitudinal axis; an adjustable mounting provided with a cone shaped outer surface adapted to receive said first named surface, and with a screw threaded outer surface; and a looking ring provided with means to facilitate its removal fitting said last named outer screw threaded surface, substantially as described.

53. In a bore sighting telescope the combination of means to secure the same inthe bore of a gun comprising a ball and socket joint; means comprising adjusting screws for pivoting the telescope barrel on said joint; a tapered ring carried by said barrel; and a floating ring fitting said ta ered ring with which said screws engage, su stantially as described.

6. In a bore sighting telescope the combination of a tubular cone shaped member carrying the cross line intersection and proexternal screw threads and with a pin adapted to enter said slot; a third tubular member adapted to receive said second tubular member and to fit the interior of the telescope barrel and a readily removable locking ring for securing said first and second named tubular members together, substantially as described. t

In testimony whereof I aflix' my signature, in presence of two Witnesses.

FRANCIS J. CLEARY.

Witnesses:

PAUL H. FRETz,

J. F. MoLER,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. 0. 

